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jEdit macro integrating jRuby

/ Published in: Java
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Almost the same as my snippet for groovy, but for jruby

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  1. buffer.setMode("ruby");
  2. buffers = jEdit.getBuffers();
  3. for(i = 0; i < buffers.length; i++) {
  4.     jrc = buffers[i].getProperty("JRubyContainer");
  5.     if(jrc != null) { break; }
  6. }
  7. if(jrc == null) {
  8. 	jarfilenamefilter = new java.io.FilenameFilter() {
  9. 		boolean accept(File dir, String name) {
  10. 			return name.endsWith(".jar");
  11. 		}
  12. 	};
  13.     libfiles = new File(System.getenv("JRUBY_HOME") + "/lib/").listFiles(jarfilenamefilter);
  14.     cl = this.getClass().getClassLoader();
  15.     for(i = 0; i < libfiles.length; i++)
  16.         cl.addURL(new URL("jar:" + libfiles[i].toURL().toString() + "!/"));
  17.     jrc = new org.jruby.embed.ScriptingContainer();
  18. 	jrc.setClassLoader(cl);
  19. }
  20. for(i = 0; i < buffers.length; i++) {
  21.     buffers[i].setProperty("JRubyContainer", jrc);
  22. }
  23. outbuffer = buffer.getProperty("outbuffer");
  24. if((outbuffer == null) || outbuffer.isClosed()) {
  25.     outbuffer = jEdit.newFile(view);
  26.     buffer.setProperty("outbuffer", outbuffer);
  27. }
  28. out = new java.io.StringWriter();
  29. jrc.setWriter(out);
  30. String text() {
  31.     view.showBuffer(buffer);
  32.     res = textArea.getSelectedText();
  33.     if(res == null || res.length() == 0) { res = buffer.getText(); }
  34.     return res;
  35. }
  36. text = text();
  37. jrc.remove("DATA");
  38. ma = java.util.regex.Pattern.compile("(?sm)\\A(.+)^__END__$(.*)\\z").matcher(text);
  39. if(ma.matches()) {
  40.     text = ma.group(1);
  41.     jrc.put("DATA", ma.group(2));
  42. }
  43. result = jrc.runScriptlet(new java.io.ByteArrayInputStream(("# -*- encoding : utf-8 -*-\n\n" + text).getBytes("UTF-8")), "(eval)");
  44. outbuffer.remove(0, outbuffer.getLength());
  45. outbuffer.insert(0, out.toString());
  46. if(result != null) {
  47. 	outbuffer.insert(outbuffer.getLength(),"\n\tResult: " + result);
  48.     view.showBuffer(outbuffer);
  49. }

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